[1]Shandong Binzhou Animal Science & Veterinary Medicine Academy, Binzhou 256600, China;
[2]Shandong Binzhou Animal Propolis Vaccine Research and Development Promotion Center, Binzhou 256600, China;
[3]Shandong Lvduante Veterinary Drug Industry Co. , Ltd. , Binzhou 256600, China;
[4]Shandong Province Binzhou City Animal Science & Veterinary Medicine office, Binahou 256600, China;